Lincoln Electric SP-255 manual TROUBLESHOOTINGE-5, Function Problems

TROUBLESHOOTINGE-5

Observe Safety Guidelines

detailed in the beginning of this manual.

TROUBLESHOOTING GUIDE

PROBLEMS	POSSIBLE AREAS OF
(SYMPTOMS)	MISADJUSTMENT(S)
		FUNCTION PROBLEMS
The SP-255 stops feeding wire	1.	Check for any restriction in the
while welding and the MOTOR		wire feeding path.
OVERLOADED message appears
on the LCD display.	2.	Make sure the correct size con-
		tact tip, gun liner and drive rolls
		are being used.
The voltage and/or wire feed speed	1.	The thumbswitch circuit in the
are being changed even though the		gun and cable assembly may be
gun thumbswitch or front panel		faulty. Repair or replace.
arrow keys are not activated.
The LCD display is not readable	1.	There may have been an inter-
even though the backlighting is		nal system “fault”. Turn input
functioning.		power off for a few seconds.
		Turn power back on and check
		for proper machine operation.
	2.	Check the input voltage. Make
		sure the input voltage matches
		the nameplate rating and the
		reconnect panel configuration.
Error messages or alarm continu-	1.	There may be an error in the
ously beeps in bursts of three.		system or the keypad entry. See
		Explanation of Prompting and
		Error Messages in the Operation
		section.

RECOMMENDED COURSE OF ACTION

If all recommended possible areas of misadjustment have been checked and the problem persists, contact your local Lincoln Authorized Field Service Facility.

IDEALARC SP-255